TW202040076A - Tap hole plug gun - Google Patents

Abstract

The invention relates to a tap hole plug gun comprising a material chamber (21) for receiving a plugging compound, a mouthpiece for being introduced into a tap hole, and a nozzle part (23) tapered in the direction of the mouthpiece and connected to the material chamber by means of an unlockable connection device (25). For realizing the connection device (25), the material chamber (21) and the nozzle part (23) have complementary axial connecting projections (28, 30) on two opposite axial connecting edges (26, 54) of a chamber wall (27) of the material chamber (21) and of a nozzle wall (29) of the nozzle part (23).

Description

Outlet plug gun

The present invention relates to an outflow stopper gun, which includes a material chamber for accommodating a blocking compound, a mouthpiece for introducing into the outflow orifice, and gradually narrowing in the direction of the mouthpiece and connected by a non-lockable connection device To the nozzle part of the material chamber.

The above-mentioned types of outlet plug guns are used to close the outlet openings of reduction furnaces or smelting furnaces, such as blast furnaces for producing pig iron and low furnaces for smelting non-ferrous metals and ferroalloys. During the clogging, the outflow plug gun is pressed against the front of the furnace with great force by means of a pivoting device, and the contact pressure is maintained until the plugging compound injected into the outflow opening of the furnace through the nozzle of the outflow plug gun has hardened. .

In order to operate the outflow stopper gun, the plugging compound is contained in the material chamber (typically a cylindrical space) of the outflow stopper gun, and is injected from the material chamber to the outflow port through the mouthpiece of the outflow stopper gun by means of the plugging piston Opening. The typical conical nozzle part, which is connected to the material chamber in a replaceable manner by means of a connecting device, is arranged between the material chamber and the mouthpiece, so as to reduce the outflow plug gun in the transition area between the material chamber and the mouthpiece The diameter. Due to the substantially reduced diameter in the cross section from the nozzle part to the blowing nozzle, a great force acts on the connecting device during spraying. Two basic requirements to be met by the connecting device are that the connecting device must be easily detachable to replace the nozzle part, and at the same time It is stable enough to reliably absorb the force acting during spraying without impairing detachability.

WO 2011/089054 A1 discloses an outflow plug gun having a nozzle part connected to a material chamber via a flange connection. The flange connector connects the nozzle part to the material chamber in the connection plane perpendicular to the spray direction, thereby connecting the bolts distributed across the circumference of the outflow plug gun and extending parallel to the spray direction, and connects the nozzle placed on the material chamber and the nozzle Two opposite flanges on the part to achieve flange connection. Since the connecting bolts extend parallel to the spray direction, the number and size of the bolts must be such that the spray force can be safely transmitted through the bolts without jeopardizing the sealing of the outflow plug gun in the connection plane or even the occurrence of bolted components. Risk of failure.

When replacing the nozzle part, the large number of bolt connections distributed across the circumference of the spout plug gun to achieve the flange connection produces a corresponding amount of installation work. This work load may even be due to the need to self-flow outlet before installing or removing the nozzle part The stopper gun is added by removing the shielding device in order to access the bolt connection placed in the bottom side area of the outflow stopper gun. The shielding device is typically placed on the bottom side of the outflow stopper gun so that the stopper gun is in the working position at the outflow port At the same time, the outlet plug gun is protected from the heat radiation guided by the automatic wheel (runner) at the outlet plug gun.

Therefore, the object of the present invention is to propose an outflow stopper gun having a connection device that enables a reliable mechanical connection between the material chamber and the nozzle part, while allowing the nozzle part to be replaced with relatively little installation work.

In order to achieve this goal, the outflow stopper gun according to the present invention has the characteristics of claim 1.

In order to realize the connection device, the material chamber and the nozzle part have complementary axial connection protrusions on the two opposite axial connection edges of the material chamber wall and the nozzle wall of the nozzle part. The method according to the present invention is such that The connecting protrusions on the upper part of the nozzle part are arranged on the connecting protrusions formed on the lower part of the material chamber, and the matching shape is radially engaged between the connecting protrusions of the nozzle part and the upper part of the material chamber and/ Or between the connecting protrusion of the material chamber and the lower part of the nozzle part, the radial joint of the matching shape body is fastened by means of a radially acting fastening device in a force-fitting manner.

The realization of the connecting device according to the present invention allows the jet force acting on the connecting device in a separate manner to be absorbed by the coordinating body established between the connecting protrusions, which means that only the position where the connecting protrusions are fastened on top of each other requires radial action The fastening device is not required to absorb the spray force. In fact, the fastening device is used to fasten the position of the connecting protrusion in a plane perpendicular to the ejection direction. On the one hand, this means that there are no specific requirements in terms of the size of the fastening device; on the other hand, the fastening device can be arranged in such a way that sufficient access from the top of the discharge spigot is exclusive.

In addition, the design of the connecting device allows the connection between the nozzle part and the material chamber to be established and cut off from the top of the spout plug gun. This means that it can be placed on the bottom side of the spout plug gun. The shielding device will not have to be removed in order to gain access to the connecting device.

In summary, the connecting device achieves a reliable mechanical connection between the material chamber and the nozzle part and facilitates installation when replacing the nozzle part.

In order to achieve the mating body joint, according to an advantageous embodiment, the ring segment web is formed on the connecting wall portion on the connecting protrusion of the nozzle part radially inside the nozzle wall, the ring segment web being joined to the ring segment recess In the groove, the ring section groove is formed on the connecting edge portion on the upper part of the material chamber radially outside the chamber wall, and/or the ring section web is formed on the nozzle radially outside the nozzle wall On the connecting edge part on the lower part of the part, the ring segment web is joined to the ring segment groove formed on the connecting protrusion of the material chamber in the radial inner part of the chamber wall Connect the edge part.

This advantageous design of the mating body joint allows the mating body joint to be achieved without any influence on the outer contour of the outflow plug gun, which means that the surface in the transition area between the nozzle portion and the material chamber is substantially flush , Especially on the bottom side of the outflow plug gun, thus allowing correspondingly approaching, radially adjacent placement of the shielding device that can be placed on the bottom side and thus placing the shielding device on the outflow plug gun without substantial enlargement External dimensions of the outflow plug gun.

In addition, the advantageous configuration of the mating body joint as described above allows the connection force to be evenly distributed across the circumference and correspondingly by means of the joint between the ring segment webs and the ring segment grooves evenly across the entire circumference seal.

If each connecting edge portion of the nozzle portion has a ring segment web extending across substantially the entire length of the connecting edge portion, and if each connecting edge portion of the material chamber has a portion extending across substantially the entire length of the connecting edge portion In the ring section groove, the continuous distribution of the connection force across the entire circumference of the outlet plug gun and the connection device is ensured.

Preferably, the radially inner ring segment groove formed in the connecting protrusion of the material chamber extends across a circumferential angle> 180° in such a way that the opposite ring segment groove end extends vertically so as to form a ring area The vertical guides at the ends of the segment webs are formed on the connecting protrusions of the nozzle part, which means that the joining process is guided during the joining of the coordinating body.

If the connecting protrusions are detachably connected to each other at the relatively horizontal connecting edge portion for forming a fastening device, the fastening device can be realized by not more than two fastening elements.

Preferably, the fastening device has two bolt connections arranged on the circumference of the spout plug gun in the area of the horizontal connection edge portion.

If the bolt connection piece is used to connect the connection tabs respectively formed on the horizontal connection edge portion of the nozzle part and the horizontal connection edge portion of the material chamber in a force-fitting manner, the bolt connection piece can be realized in the simplest way.

Preferably, each bolt connection has a bolt, which is preferably realized as a threaded bolt and has a protective device arranged between the bolt and the mouthpiece and protects the bolt from external influences, which means the function of the bolt connection And the operation will not be adversely affected by external influences such as metal or slag splashing from the tapping channel, which may cause corresponding deposits on the bolt connection.

Particularly advantageously, at least one connecting tab of each bolt connection is provided with a protective web extending parallel to the bolt to realize the protective device.

Hereinafter, preferred embodiments of the present invention will be explained in more detail with reference to the drawings.

Fig. 1 shows an outflow stopper gun 20 shown in basic components. The outflow stopper gun 20 comprises a material chamber 21 realized as a hollow cylinder as seen especially from the illustration in Fig. 4, the material chamber 21 for receiving the plug The plugging compound is filled into the material chamber 21 through a filling opening (not shown in the figure), is compressed in the material chamber 21 by means of a piston 22 guided in the material chamber 21, and is self-selected via the nozzle part 23 The blowing nozzle 24 connected to the material chamber 21 is discharged into the outflow port of the furnace equipment (not shown in the figure). In the current embodiment of the outflow plug gun 20, the blowing nozzle 24 is independent of the nozzle part 23.

The nozzle portion 23 enables the inner diameter of the outflow plug gun 20 to be reduced according to the needs of the transition area from the material chamber 21 to the mouthpiece 24, and is cut off for this purpose, especially in the current exemplary embodiment obliquely Truncated. As can be understood in particular from the illustration in FIG. 4, when the outlet plug gun 20 is in operation, the large axial force generated by the compression force exerted by the piston 22 on the blocking compound blocks the compressed material chamber 21 The compounding period acts on the connecting device 25 formed between the material chamber 21 and the nozzle part 23. As shown in FIG. 6, the connecting device 25 has an axial connecting protrusion 28 on the axial connecting edge 26 of the chamber wall 27 of the material chamber 21 and on the axial connecting edge 54 of the nozzle wall 29 of the nozzle portion 23 The connecting protrusion 30 is used to establish a form-fitting connection between the material chamber 21 and the nozzle portion 23.

As is particularly obvious from the combined diagrams of FIGS. 5 and 6, the connecting protrusion 30 of the nozzle part 23 is formed on the upper part 31 of the nozzle part 23, and the connecting protrusion 28 of the material chamber 21 is formed on the lower part of the material chamber 21 On the part 32, the connecting protrusion 30 of the nozzle part 23 therefore rests on the connecting protrusion 28 formed on the material chamber 21, and the matching shape radially engages the connecting protrusion 30 established on the nozzle part 23 and the material chamber on one side. 21 between the connecting edge portions 33 on the upper portion 34 and on the other side between the connecting protrusion 28 of the material chamber 21 and the connecting edge portion 35 on the lower portion 36 of the nozzle portion 23.

As shown in Fig. 6 and Fig. 2 (which show the nozzle part in the relative position immediately before the establishment of the coordinating body joint (Fig. 6) and in the relative position immediately after the establishment of the coordinating body joint (Fig. 2) 23) The comparison becomes obvious. After the coordinating body joint has been established, the nozzle part 23 has been fastened together with the material chamber 21 in the relative position of the nozzle part under the influence of gravity. In order to also tighten the relative positions shown in FIG. 2 when a compressive force is applied to the nozzle portion 23, in addition to the engagement of the coordinating body, a radially acting tightening device 37 is provided. The tightening devices 37 are connected at the relative horizontal edge The parts 38 and 39 (Figure 6) have respective bolt connectors 40, 41 (Figure 1). The bolt connectors 40 and 41 are connected to the nozzle part 23 by means of threaded bolts (not shown). Two opposing connecting tabs 42 and 43 on the connecting edge portion 38 of the protrusion 30 and on the connecting edge portion 39 of the connecting protrusion 28 of the material chamber 21.

Therefore, the bolt connectors 40, 41 fasten the connecting protrusions 28, 30 in the radial positions of the protrusions, thereby preventing the compression force occurring in the outlet plug gun 20 from being cut off between the connecting protrusions 28, 30. The axial part of the matching body that joins and absorbs the compressive force.

In order to achieve the mating body joint, the ring segment web 45 (FIG. 4) is formed on the connecting edge portion 44 on the connecting protrusion 30 of the nozzle portion 23 radially inside the nozzle wall 29, and the ring segment web 45 engages To the ring web groove 47 (FIG. 5 ), the ring web groove is formed on the connecting edge portion 46 on the upper portion 34 of the material chamber 21 radially outside the chamber wall 27.

As shown in Figure 4, the ring segment web 49 is formed in the connecting edge portion 48 on the lower portion 36 of the nozzle portion 23 radially outside the nozzle wall 29, the ring segment web 49 being joined to the ring segment In the groove 51, the ring segment groove is formed on the connecting edge portion 50 on the connecting protrusion 28 of the material chamber 21 radially inside the chamber wall 27.

As can be seen in particular from the illustration in Figure 5, the radially inner ring segment groove 51 formed in the connecting protrusion 28 of the material chamber 21 extends across a circumferential angle> 180° in such a way that during the establishment of the joint, The opposite groove ends 52, 53 of the ring section groove 51 can be used to form vertical guides for the ends of the ring section web 45. The guides are formed on the connecting protrusion 30 of the nozzle portion 23 and correspondingly Extend in the vertical direction.

As can be seen in particular from FIG. 3, the bolt connections 40, 41 are configured in a manner such that the bolts connecting the connecting tabs 42, 43 along the bolt axis 55 in a force fit manner and are preferably realized as threaded bolts 75 are protected The protective device 56 formed by the webs 57 and 58 protects from the outside influence on the side facing the mouthpiece 24. These protective webs are implemented vertically on the connecting tab 42 and simultaneously realize the bending of the connecting tab 42 Curve stiffness.

The shielding device 76 is arranged on the lower part 32 of the material chamber 21 and the lower part 36 of the nozzle part 23, especially for avoiding the heat radiation emitted by the outflow plug gun 20 against the outflow plug gun 20.

As can be seen in particular from the sequence of FIGS. 7 to 10, the mouthpiece 24 is realized as a component independent of the nozzle part 23 in the present situation, an articulated joint configuration 59 is provided for connecting the mouthpiece 24 to the nozzle part 23, an articulated joint The arrangement 59 has two opposing articulated joints 60, 61, each of the articulated joints has a joint plate arrangement 64 formed by two parallel joint plates 62, 63 and a joint plate arrangement 66 formed by a single joint plate 65 of the nozzle part 23, The joint plate arrangements 64 and 65 are connected via joint bolts 67.

As shown in FIG. 10, the joint plate 65 disposed on the mouthpiece 24 has a side post portion 68 of the joint eyelet 69, the side post portion 68 is wedge-shaped in the direction of the joint axis 77 and has a wedge shape with the joint bolt 67 The complementary wedge shape of the part 70 (Figure 9) in such a way that when the joint bolt 67 is placed in the hinge joint 60, 61, the joint bolt 67 connects the joint plate arrangement 64 of the nozzle part 63 to the joint plate 65 of the mouthpiece 24 As shown in FIG. 7, the method is such that the wedge-shaped portion 70 is disposed in the joint hole 69 of the joint plate 65 and is connected to the joint plate 65 in a non-rotating manner.

In the configuration shown in FIG. 7, the opposite articulated joints 60, 61 are provided with joint bolts 67 for forming the joint axis 77, which means that the mouthpiece 24 is fixed relative to the nozzle portion 23 and can be borrowed when needed. The stopper gun 20 moves forward from the outflow port and is introduced into the outflow port.

In the event that one of the two joint bolts 67 is removed from one of the hinged joint 60 or 61, the mouthpiece 24 can pivot on one side about the joint axis 77, which is held by the hinged joint 60 Or the joint bolt 67 in 61 is formed, for example, for maintenance purposes. Therefore, as shown in Fig. 11, the mouthpiece 24 can be selectively pivoted about the joint axis 77 in one direction or the other.

As can be seen from FIG. 10, the joining device is formed between the opposite axial connecting edges 71 and 72 of the nozzle portion 23 and the blowing nozzle 24, respectively. The joining device consists of a ring formed on the connecting edge 71 of the nozzle portion 23 on one side. The web 73 and the ring groove 74 formed on the connecting edge 72 of the mouthpiece 24 on the other side are formed, and realize the radial seal of the connection established between the nozzle portion 23 and the mouthpiece 24 by the articulated joint arrangement 59 .

Preferably, the ring web 73 has a cross section complementary to the cross section of the ring groove 74. The wedge effect that may occur between the side pillar portion 68 of the joint plate 65 and the wedge portion 70 of the joint bolt 67 can be formed between the nozzle portion 23 and the mouthpiece 24 by inserting the joint bolt 67 into the joint hole 69 of the joint plate 65. An axial sealing force is generated between them, and the effective sealing position of the blowing nozzle 24 and the nozzle part 23 relative to each other is achieved by means of the axial sealing force.

no

[Figure 1] is an isometric illustration of the outflow plug gun including the nozzle part arranged between the material chamber and the mouthpiece; [Figure 2] Shows the outflow plug gun of Figure 1 with the mouthpiece partially removed from the nozzle; [Figure 3] is a partial side view of the outflow plug gun shown in Figure 1; [Figure 4] is a longitudinal cross-sectional view of the outflow stopper gun shown in Figure 3; [Figure 5] is an isometric illustration of the material chamber, in which the axial connecting protrusions are formed on the lower part of the material chamber; [Figure 6] Shows the material chamber of Figure 5, where the nozzle part is arranged in the installation position above the connecting protrusion; [Figure 7] Shows the nozzle part of Figure 1, in which the blowing nozzle is connected to the nozzle part via an articulated joint configuration; [Figure 8] Show the mouthpiece of Figure 7 during the installation phase; [Figure 9] is a side view of the mouthpiece shown in Figure 8; Figure 10] shows the articulated joint configuration of Figures 7 and 8, in which the mouthpiece pivots around the articulated joint; [Figure 11] is the bottom view of the outflow plug gun shown in Figure 4.

21: Material chamber

23: Nozzle part

25: Connect the device

26: Axial connection edge

27: Chamber wall

28: connecting protrusion

29: nozzle wall

30: connecting protrusion

31: upper part

34: upper part

35: Connect the edge part

36: lower part

38: Connect the edge part

39: connecting edge part

42: connection tab

49: Ring segment web

51: ring segment groove

54: Axial connection edge

Claims (9)

An outlet plug gun (20), which includes a material chamber (21) for accommodating a plugging compound, a mouthpiece (24) for introducing into the first-rate outlet, and a mouthpiece (24) in the mouthpiece (24) Gradually narrowing in the direction and connected to a nozzle part (23) of the material chamber by means of an unlockable connection device (25), It is characterized by In order to realize the connecting device (25), the material chamber (21) and the nozzle part (23) are located on a chamber wall (27) of the material chamber (21) and a nozzle wall of the nozzle part (23) The two opposite axial connecting edges (26, 54) of (29) are provided with complementary axial connecting protrusions (28, 30) in such a way as to form an upper part (31) of the nozzle part (23) The connecting protrusion (30) is arranged on the connecting protrusion (28) formed on a lower part (32) of the material chamber (21), and a matching body is radially engaged and established on the nozzle part (23) Between the connecting protrusion (30) and the upper part (34) of the material chamber (21) and/or the connecting protrusion (28) of the material chamber (21) and the lower part of the nozzle part (23) Between the parts (36), the radial joint of the matching body is fastened in a force-fitting manner by means of a radially acting fastening device (37). If the gun is plugged at the outlet of claim 1, It is characterized by In order to achieve the mating body joint, a ring segment web (45) is formed on a connecting edge portion (44) of the connecting protrusion (30) of the nozzle portion (23) radially inside the nozzle wall (29) ), the ring segment web (45) is joined to a ring segment groove (47) formed in the material chamber (21) radially outside the chamber wall (27) ) On a connecting edge portion (46) of the upper portion (34), and/or a ring segment web (49) formed on the nozzle portion (23) radially outside the nozzle wall (29) On a connecting edge portion (48) on the lower portion (36), the ring segment web (49) is engaged in a ring segment groove (51) that is in the chamber wall ( The radial inner part of 27) is formed on a connecting edge part (50) of the connecting protrusion (28) of the material chamber (21). Such as the outflow plug gun of claim 1 or 2, It is characterized by Each connecting edge portion (44, 48) of the nozzle portion (23) is provided with a ring segment web (45, 49) extending across substantially the entire length of the connecting edge portion (44, 48), and the material cavity Each connecting edge portion (33, 50) of the chamber (21) is provided with a ring segment groove (47, 51) extending across substantially the entire length of the connecting edge portion (33, 50). Such as the outflow plug gun of any one of claims 1 to 3, It is characterized by The radially inner ring segment groove (51) formed in the connecting protrusion (28) of the material chamber (21) extends across a circumferential angle> 180° in such a way that the opposite ring segment groove end (52, 53) extending in the vertical direction to form vertical guides at the end of the ring segment web (45), the guides being formed on the connecting protrusion (30) of the nozzle part (23) on. Such as the outflow plug gun of any one of claims 1 to 4, It is characterized by In order to realize the fastening device (37), the connecting protrusions (28, 30) are detachably connected to each other at relatively horizontal connecting edge portions (38, 39). If the gun is plugged in the outflow of claim 5, It is characterized by The fastening device (37) has two bolt connections (40, 41) arranged on the circumference of the outlet plug gun (20) in the area of the horizontal connection edge portions (38, 39). If the gun is plugged at the outflow port of claim 6, It is characterized by The bolt connectors (40, 41) are used to connect in a force-fitting manner and are respectively arranged on a horizontal connecting edge portion (38) of the nozzle portion (23) and a horizontal connecting edge of the material chamber (21) Connecting tabs (42, 43) on part (39). Such as the outflow port plug gun of claim 6 or 7, It is characterized by Each bolt connection piece (40, 41) has a bolt, which is preferably realized as a threaded bolt (75) and is provided with a bolt arranged between the bolt and the blowing nozzle (24) and protects the bolt from external influences One protection device (56). If the gun is plugged in the outflow of claim 8, It is characterized by In order to realize the protective device (56), at least one connecting tab (42, 43) of each bolt connection (40, 41) is provided with a protective web (57, 58) extending parallel to the bolt.

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